const String keywordPublic = 'public';
const String keywordPrivate = 'private';
const String keywordStatic = 'static';
const String keywordClass = 'class';
const String keywordInterface = 'interface';
const String keywordExtends = 'extends';
const String keywordParenthesesLeft = '(';
const String keywordParenthesesRight = ')';
const String keywordBraceLeft = '{';
const String keywordBraceRight = '}';
const String keywordSpace = ' ';
